tolong dong kak dibantu

ini ya kak semoga membantu

D1=A1=30 cm²= 30:10.000=0,003 m²
A2=60 cm²=60:10.000=0,006 m²
F2=40.000 N
D2=F1
D3=p1=p2
F1/A1=F2/A2
F1/0,003×40.000/0,006
F1 ×0,006=40.000×0,003
F1×0,006=40×3
120/0,006 × 1000/1000
=120.000/6
=20.000 N